static void *
vips_fits_write_meta( VipsImage *image,
const char *field, GValue *value, void *a )
{
VipsFits *fits = (VipsFits *) a;
int status;
const char *value_str;
status = 0;
/* We want fields which start "fits-".
*/
if( !vips_isprefix( "fits-", field ) )
return( NULL );
/* The value should be a refstring, since we wrote it in fits2vips
* above ^^.
*/
value_str = vips_value_get_ref_string( value, NULL );
VIPS_DEBUG_MSG( "vips_fits_write_meta: setting meta on fits image:\n" );
VIPS_DEBUG_MSG( " value == \"%s\"\n", value_str );
if( fits_write_record( fits->fptr, value_str, &status ) ) {
vips_fits_error( status );
return( a );
}
return( NULL );
}
static VipsFits *
vips_fits_new_read( const char *filename, VipsImage *out, int band_select )
{
VipsFits *fits;
int status;
if( !(fits = VIPS_NEW( out, VipsFits )) )
return( NULL );
fits->filename = vips_strdup( NULL, filename );
fits->image = out;
fits->fptr = NULL;
fits->lock = NULL;
fits->band_select = band_select;
fits->buffer = NULL;
g_signal_connect( out, "close",
G_CALLBACK( vips_fits_close_cb ), fits );
status = 0;
if( fits_open_file( &fits->fptr, filename, READONLY, &status ) ) {
vips_error( "fits", _( "unable to open \"%s\"" ), filename );
vips_fits_error( status );
return( NULL );
}
fits->lock = vips_g_mutex_new();
return( fits );
}
static int
vips_fits_write( VipsRegion *region, VipsRect *area, void *a )
{
VipsFits *fits = (VipsFits *) a;
VipsImage *image = fits->image;
int es = VIPS_IMAGE_SIZEOF_ELEMENT( image );
int ps = VIPS_IMAGE_SIZEOF_PEL( image );
int status;
int y, b, x, k;
status = 0;
VIPS_DEBUG_MSG( "vips_fits_write: "
"writing left = %d, top = %d, width = %d, height = %d\n",
area->left, area->top, area->width, area->height );
/* We need to write a band at a time. We can't bandsplit in vips,
* since vips_sink_disc() can't loop over many images at once, sadly.
*/
for( y = 0; y < area->height; y++ ) {
VipsPel *p = VIPS_REGION_ADDR( region,
area->left, area->top + y );
for( b = 0; b < image->Bands; b++ ) {
VipsPel *p1, *q;
long fpixel[3];
p1 = p + b * es;
q = fits->buffer;
for( x = 0; x < area->width; x++ ) {
for( k = 0; k < es; k++ )
q[k] = p1[k];
q += es;
p1 += ps;
}
fpixel[0] = area->left + 1;
fpixel[1] = area->top + y + 1;
fpixel[2] = b + 1;
/* No need to lock, write functions are single-threaded.
*/
if( fits_write_pix( fits->fptr, fits->datatype,
fpixel, area->width, fits->buffer,
&status ) ) {
vips_fits_error( status );
return( -1 );
}
}
}
return( 0 );
}
static VipsFits *
vips_fits_new_write( VipsImage *in, const char *filename )
{
VipsFits *fits;
int status;
status = 0;
if( !(fits = VIPS_NEW( in, VipsFits )) )
return( NULL );
fits->filename = vips_strdup( VIPS_OBJECT( in ), filename );
fits->image = in;
fits->fptr = NULL;
fits->lock = NULL;
fits->band_select = -1;
fits->buffer = NULL;
g_signal_connect( in, "close",
G_CALLBACK( vips_fits_close_cb ), fits );
if( !(fits->filename = vips_strdup( NULL, filename )) )
return( NULL );
/* We need to be able to hold one scanline of one band.
*/
if( !(fits->buffer = VIPS_ARRAY( NULL,
VIPS_IMAGE_SIZEOF_ELEMENT( in ) * in->Xsize, VipsPel )) )
return( NULL );
/* fits_create_file() will fail if there's a file of thet name, unless
* we put a "!" in front ofthe filename. This breaks conventions with
* the rest of vips, so just unlink explicitly.
*/
g_unlink( filename );
if( fits_create_file( &fits->fptr, filename, &status ) ) {
vips_error( "fits",
_( "unable to write to \"%s\"" ), filename );
vips_fits_error( status );
return( NULL );
}
fits->lock = vips_g_mutex_new();
return( fits );
}
static int
vips_fits_set_header( VipsFits *fits, VipsImage *in )
{
int status;
int bitpix;
int i;
status = 0;
fits->naxis = 3;
fits->naxes[0] = in->Xsize;
fits->naxes[1] = in->Ysize;
fits->naxes[2] = in->Bands;
for( i = 0; i < VIPS_NUMBER( fits2vips_formats ); i++ )
if( fits2vips_formats[i][1] == in->BandFmt )
break;
if( i == VIPS_NUMBER( fits2vips_formats ) ) {
vips_error( "fits",
_( "unsupported BandFmt %d\n" ), in->BandFmt );
return( -1 );
}
bitpix = fits2vips_formats[i][0];
fits->datatype = fits2vips_formats[i][2];
#ifdef VIPS_DEBUG
VIPS_DEBUG_MSG( "naxis = %d\n", fits->naxis );
for( i = 0; i < fits->naxis; i++ )
VIPS_DEBUG_MSG( "%d) %lld\n", i, fits->naxes[i] );
VIPS_DEBUG_MSG( "bitpix = %d\n", bitpix );
#endif /*VIPS_DEBUG*/
if( fits_create_imgll( fits->fptr, bitpix, fits->naxis,
fits->naxes, &status ) ) {
vips_fits_error( status );
return( -1 );
}
if( vips_image_map( in,
(VipsImageMapFn) vips_fits_write_meta, fits ) )
return( -1 );
return( 0 );
}
/* Shut down. Can be called many times.
*/
static void
vips_fits_close( VipsFits *fits )
{
VIPS_FREE( fits->filename );
VIPS_FREEF( vips_g_mutex_free, fits->lock );
if( fits->fptr ) {
int status;
status = 0;
if( fits_close_file( fits->fptr, &status ) )
vips_fits_error( status );
fits->fptr = NULL;
}
VIPS_FREE( fits->buffer );
}
int
vips__fits_isfits( const char *filename )
{
fitsfile *fptr;
int status;
VIPS_DEBUG_MSG( "isfits: testing \"%s\"\n", filename );
status = 0;
if( fits_open_image( &fptr, filename, READONLY, &status ) ) {
VIPS_DEBUG_MSG( "isfits: error reading \"%s\"\n", filename );
#ifdef VIPS_DEBUG
vips_fits_error( status );
#endif /*VIPS_DEBUG*/
return( 0 );
}
fits_close_file( fptr, &status );
return( 1 );
}
static int
fits2vips_generate( VipsRegion *out,
void *seq, void *a, void *b, gboolean *stop )
{
VipsFits *fits = (VipsFits *) a;
Rect *r = &out->valid;
VipsPel *q;
int z;
int status;
long fpixel[MAX_DIMENSIONS];
long lpixel[MAX_DIMENSIONS];
long inc[MAX_DIMENSIONS];
status = 0;
VIPS_DEBUG_MSG( "fits2vips_generate: "
"generating left = %d, top = %d, width = %d, height = %d\n",
r->left, r->top, r->width, r->height );
/* Special case: the region we are writing to is exactly the width we
* need, ie. we can read a rectangular area into it.
*/
if( VIPS_REGION_LSKIP( out ) == VIPS_REGION_SIZEOF_LINE( out ) ) {
VIPS_DEBUG_MSG( "fits2vips_generate: block read\n" );
for( z = 0; z < MAX_DIMENSIONS; z++ )
fpixel[z] = 1;
fpixel[0] = r->left + 1;
fpixel[1] = r->top + 1;
fpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
lpixel[z] = 1;
lpixel[0] = VIPS_RECT_RIGHT( r );
lpixel[1] = VIPS_RECT_BOTTOM( r );
lpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
inc[z] = 1;
q = VIPS_REGION_ADDR( out, r->left, r->top );
/* Break on ffgsv() for this call.
*/
g_mutex_lock( fits->lock );
if( fits_read_subset( fits->fptr, fits->datatype,
fpixel, lpixel, inc,
NULL, q, NULL, &status ) ) {
vips_fits_error( status );
g_mutex_unlock( fits->lock );
return( -1 );
}
g_mutex_unlock( fits->lock );
}
else {
int y;
for( y = r->top; y < VIPS_RECT_BOTTOM( r ); y ++ ) {
for( z = 0; z < MAX_DIMENSIONS; z++ )
fpixel[z] = 1;
fpixel[0] = r->left + 1;
fpixel[1] = y + 1;
fpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
lpixel[z] = 1;
lpixel[0] = VIPS_RECT_RIGHT( r );
lpixel[1] = y + 1;
lpixel[2] = fits->band_select + 1;
for( z = 0; z < MAX_DIMENSIONS; z++ )
inc[z] = 1;
q = VIPS_REGION_ADDR( out, r->left, y );
/* Break on ffgsv() for this call.
*/
g_mutex_lock( fits->lock );
if( fits_read_subset( fits->fptr, fits->datatype,
fpixel, lpixel, inc,
NULL, q, NULL, &status ) ) {
vips_fits_error( status );
g_mutex_unlock( fits->lock );
return( -1 );
}
g_mutex_unlock( fits->lock );
}
}
return( 0 );
}
static int
vips_fits_get_header( VipsFits *fits, VipsImage *out )
{
int status;
int bitpix;
int width, height, bands, format, type;
int keysexist;
int i;
status = 0;
if( fits_get_img_paramll( fits->fptr,
10, &bitpix, &fits->naxis, fits->naxes, &status ) ) {
vips_fits_error( status );
return( -1 );
}
#ifdef VIPS_DEBUG
VIPS_DEBUG_MSG( "naxis = %d\n", fits->naxis );
for( i = 0; i < fits->naxis; i++ )
VIPS_DEBUG_MSG( "%d) %lld\n", i, fits->naxes[i] );
#endif /*VIPS_DEBUG*/
height = 1;
bands = 1;
switch( fits->naxis ) {
/* If you add more dimensions here, adjust data read below. See also
* the definition of MAX_DIMENSIONS above.
*/
case 10:
case 9:
case 8:
case 7:
case 6:
case 5:
case 4:
for( i = fits->naxis; i > 3; i-- )
if( fits->naxes[i - 1] != 1 ) {
vips_error( "fits",
"%s", _( "dimensions above 3 "
"must be size 1" ) );
return( -1 );
}
case 3:
bands = fits->naxes[2];
case 2:
height = fits->naxes[1];
case 1:
width = fits->naxes[0];
break;
default:
vips_error( "fits", _( "bad number of axis %d" ), fits->naxis );
return( -1 );
}
/* Are we in one-band mode?
*/
if( fits->band_select != -1 )
bands = 1;
/* Get image format. We want the 'raw' format of the image, our caller
* can convert using the meta info if they want.
*/
for( i = 0; i < VIPS_NUMBER( fits2vips_formats ); i++ )
if( fits2vips_formats[i][0] == bitpix )
break;
if( i == VIPS_NUMBER( fits2vips_formats ) ) {
vips_error( "fits", _( "unsupported bitpix %d\n" ),
bitpix );
return( -1 );
}
format = fits2vips_formats[i][1];
fits->datatype = fits2vips_formats[i][2];
if( bands == 1 ) {
if( format == VIPS_FORMAT_USHORT )
type = VIPS_INTERPRETATION_GREY16;
else
type = VIPS_INTERPRETATION_B_W;
}
else if( bands == 3 ) {
if( format == VIPS_FORMAT_USHORT )
type = VIPS_INTERPRETATION_RGB16;
else
type = VIPS_INTERPRETATION_RGB;
}
else
type = VIPS_INTERPRETATION_MULTIBAND;
vips_image_pipelinev( out, VIPS_DEMAND_STYLE_SMALLTILE, NULL );
vips_image_init_fields( out,
width, height, bands,
format,
VIPS_CODING_NONE, type, 1.0, 1.0 );
/* Read all keys into meta.
*/
if( fits_get_hdrspace( fits->fptr, &keysexist, NULL, &status ) ) {
vips_fits_error( status );
return( -1 );
}
for( i = 0; i < keysexist; i++ ) {
char record[81];
char vipsname[100];
if( fits_read_record( fits->fptr, i + 1, record, &status ) ) {
vips_fits_error( status );
return( -1 );
}
VIPS_DEBUG_MSG( "fits2vips: setting meta on vips image:\n" );
VIPS_DEBUG_MSG( " record == \"%s\"\n", record );
/* FITS lets keys repeat. For example, HISTORY appears many
* times, each time with a fresh line of history attached. We
* have to include the key index in the vips name we assign.
*/
vips_snprintf( vipsname, 100, "fits-%d", i );
vips_image_set_string( out, vipsname, record );
}
return( 0 );
}
static VipsFits *
vips_fits_new_write( VipsImage *in, const char *filename )
{
VipsImage *flip;
VipsImage *type;
VipsFits *fits;
int status;
status = 0;
if( im_check_noncomplex( "im_vips2fits", in ) ||
im_check_uncoded( "im_vips2fits", in ) )
return( NULL );
/* Cast to a supported format.
*/
if( !(type = vips_image_new()) ||
vips_object_local( in, type ) ||
im_clip2fmt( in, type, vips_fits_bandfmt[in->BandFmt] ) )
return( NULL );
in = type;
/* FITS has (0,0) in the bottom left, we need to flip.
*/
if( !(flip = vips_image_new()) ||
vips_object_local( in, flip ) ||
im_flipver( in, flip ) )
return( NULL );
in = flip;
if( !(fits = VIPS_NEW( in, VipsFits )) )
return( NULL );
fits->filename = im_strdup( NULL, filename );
fits->image = in;
fits->fptr = NULL;
fits->lock = NULL;
fits->band_select = -1;
fits->buffer = NULL;
g_signal_connect( in, "close",
G_CALLBACK( vips_fits_close_cb ), fits );
if( !(fits->filename = im_strdup( NULL, filename )) )
return( NULL );
/* We need to be able to hold one scanline of one band.
*/
if( !(fits->buffer = VIPS_ARRAY( NULL,
VIPS_IMAGE_SIZEOF_ELEMENT( in ) * in->Xsize, PEL )) )
return( NULL );
/* fits_create_file() will fail if there's a file of thet name, unless
* we put a "!" in front ofthe filename. This breaks conventions with
* the rest of vips, so just unlink explicitly.
*/
g_unlink( filename );
if( fits_create_file( &fits->fptr, filename, &status ) ) {
im_error( "fits", _( "unable to write to \"%s\"" ), filename );
vips_fits_error( status );
return( NULL );
}
fits->lock = g_mutex_new();
return( fits );
}